Home / 687,773.40-1,031,660.10-404,338.20

Finding the Fourth Proportional to 687,773.40, 1,031,660.10 and 404,338.20

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Solution

The fourth proportional to 687,773.40, 1,031,660.10 and 404,338.20 is: 606,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,773.40 : 1,031,660.10 = 404,338.20 : x
  2. Step 2: Convert to fraction form
    687,773.40/1,031,660.10 = 404,338.20/x
  3. Step 3: Cross multiply
    687,773.40x = 1,031,660.10 × 404,338.20
  4. Step 4: Simplify right side
    687,773.40x = 417,139,587,845.82
  5. Step 5: Solve for x
    x = 417,139,587,845.82/687,773.40
  6. Step 6: Final answer
    x = 606,507.30

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.